Changes: Change contactBirthday from QContactBirthday to QDate
Changes: Change contactBirthday from QContactBirthday to QDate

RevBy: cocos (MR#52)
Details: We don't need the full detail. Less indirections, better code.

matthewvogt/contactsd,matthewvogt/contactsd,matthewvogt/contactsd,matthewvogt/contactsd